Technical specifications
A.9 Digital signal modules (SMs)
S7-1200 Programmable controller
1454 System Manual, V4.2, 09/2016, A5E02486680-AK
Table A- 126 Wiring diagrams for the digital input V DC/output relay SMs
SM 1223 DI 8 x 24 V DC, DQ 8 x Relay
(6ES7223-1PH32-0XB0)
SM 1223 DI 16 x 24 V DC, DQ 16 x Relay
(6ES7223-1PL32-0XB0)
① For sinking
inputs, connect "-"
to "M" (shown).
For sourcing inputs,
connect "+" to "M".
Table A- 127 Connector Pin Locations for SM 1223 DI 8 x 24 V DC, DQ 8 x Relay (6ES7223-1PH32-
0XB0)
Table A- 128 Connector Pin Locations for SM 1223 DI 16 x 24 V DC, DQ 16 x Relay (6ES7223-
1PL32-0XB0)
1 L+ / 24 V DC Functional Earth 1L 3L
3 1M 2M DQ a.1 DQ b.1